1. Abramowitz, M.; Stegun, I. A.; Handbook of mathematical functions: with formulas, graphs, and mathematical tables, Courier Corporation. (55), 1964.
2. Askour, N. E.; Mouayn, Z.; Resolvent kernel for the Kohn Laplacian on Heisenberg groups, Electronic Journal of Differential Equations, 2002 (2002) No. 69, 1-15 .
3. Askour, N. E.; Mouhcine, Z.; Heat and resolvent kernels and a fundamental solution for the octonionic Heisenberg Laplacian, (2021). Preprint.
4. Bateman, H.; Erdelyi, A.; Tables of integral transforms, New York etc., (1), 1954.
5. Bonfiglioli, A.; Uguzzoni, F.; Nonlinear Liouville theorems for some critical problems on H-type groups, Journal of Functional Analysis 207.1 (2004), 161-215.